ANDY CHAU MS
NPI 1790505311
Nutritionist - Nutrition, Education in Vista, CA
NPI Status: Active since October 17, 2024
Contact Information
1345 SUNSET DR
VISTA, CA
ZIP 92081
Phone: (760) 917-0699
- Individual
- Male
- Nutritionist
- Nutrition, Education
About ANDY CHAU
This page provides the complete NPI Profile along with additional information for Andy Chau, a provider established in Vista, California with a medical specialization in Nutritionist, focusing in nutrition, education . The healthcare provider is registered in the NPI registry with number 1790505311 assigned on October 2024. The practitioner's primary taxonomy code is 133NN1002X. The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1790505311
- Provider Name
- ANDY CHAU MS
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1345 SUNSET DR VISTA, CA 92081
- Location Phone
- (760) 917-0699
- Mailing Address
- 3400 COTTAGE WAY STE G2 SACRAMENTO, CA 95825
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-17-2024
- Last Update Date
- 09-11-2025
- Code Navigator
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Nutritionist Nutrition, Education
- Taxonomy Code
- 133NN1002X
- Type
- Dietary & Nutritional Service Providers
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1790505311, we treat the final digit (1) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 49. The final step is to find the difference between that total and the next multiple of ten (50 - 49 = 1).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 49 is 50. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1790505311, enumerated as an "individual" on October 17, 2024.
The provider is located at 1345 SUNSET DR VISTA, CA 92081 and the phone number is (760) 917-0699.
Nutritionist with taxonomy code 133NN1002X and a focus in Nutrition, Education.
